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3rd International Congress 3rd International of Nuclear Congress Medicine of Nuclear & 15th Medicine Iranian Annual & 15th Iranian Congress Annual of Nuclear Congress Medicine of Nuclear Medicine Shahid Beheshti Shahid Beheshti University University of Medical Sciences of Medical 19-21 Sciences May 201119-21 May 2011 Effect of Restricted Sea foods on 99m Technetium Thyroid Scintigraphy: A Neglectful Issue in Routine Practice Hamid Javadi 1 , Mehdi Mogharrabi 2 , Isa Neshandar Asli 3 , Sara Jalallat 1 , Iraj Nabipour 4 , Majid Assadi 5 1 Golestan Research Center of Gastroenterology and Hepatology (GRCGH) 2 Golestan University of Medical Science, Department of Nuclear Medicine 3 Shahid Beheshti University of Medical Science, Department of Nuclear Medicine 4 The Persian Gulf Marine-Medicine Biotechnology Research Center 5 The Persian Gulf Nuclear Medicine Research center Introduction: Although patients are recommended to avoid sea food and iodine-containing medications prior to I-131 scanning, the efficacy of this approach for Tc 99m-pertechnetate thyroid scintigraphy is not well addressed in the literature. We evaluated a self-managed, outpatient, restricted iodine diet (RID) designed to reduce total body iodine (TBI) in preparation for such scan. Methods: Thirty-nine subjects (30 females and 9 males; age: 14-54 years) with poor visualization of thyroid gland on Tc99mpertechnetate thyroid scintigraphy were called to carry out the repeated scan after going on a RID for at least two weeks prior to the second scintigraphy. The semiquantitative analysis in 8 regions of interest (ROIs) was accomplished using Wilcoxon signed rank test. Results: Thirty-six subjects had better quality scintigraphy images in post RID thyroid scan, assessed by two nuclear medicine physicians with full agreement. There was a statistically significant difference in two regions of right and left thyroid lobes (ROI 5, 6) with increased count rates in the post RID projections (p
3rd International Congress of of Nuclear Medicine & & 15th 15th Iranian Annual Annual Congress of Congress of Nuclear Medicine Shahid Beheshti Shahid Beheshti University University of Medical of Medical Sciences Sciences 19-21 19-21 May May 2011 Statistical Evaluation of Pulmonary Embolism with Lung Ventilation-Perfusion Scan Esmael Gharepapagh¹, Arman Salarifar 2 1 Tabriz University of Medical Sciences, Department of Nuclear Medicine 2 Tabriz University of Medical Sciences Background: Pulmonary embolism (PE) is a common fatal disease, therefore, the accurate and prompt diagnosis is very important. The aim of this study is evaluation of lung perfusion-ventilation scan with relative radiodrugs including 99mTc-MAA and radioaerosols as a noninvasive and readily available methods with acceptable sensitivity and specificity in the diagnosis of PE. Materials and Methods: In this study 149 patients with respiratory problems, who had referred to the nuclear medicine department of Tabriz Imam Hospital, from October 2005 to November 2006, were studied. The perfusion scans performed after iv. injection of 99mTc- MAA,and the ventilation scans performed after inhalation of 99mTc- DTPA aerosol on the routine views of lungs. The resulting images were evaluated by nuclear medicine specilalist regarding the probabilities of PE. The relationship of sex, age, clinical presentations, risk factors, previous cardio-pulmonary disorders and chest X-Rays of the patients, with high and low probability of PE were also evaluated. This study’s subjects were consisting of 78 men and 71 women who were examined based on taking their medical history, studying their medical files and evaluating their related documents. Results: In the present study, it was discovered that the number of involved men with PE was higher than women (P < 0.005), as the patients get older, the incidence of PE becomes higher (P = 0.005), there was a direct connection between the probability of PE and having clinical presentations of their illness(P = 0.005).It was also apparent that the existence of cardio-pulmonary disorders, having an abnormal CXR and the lack of a risk factor, were all accompanied with low probability of PE, but the presence or absence of risk factors showed no meaningful difference for the high probability of PE (P = 0.232). Conclusion: The lung perfusion-ventilation scan is recommended as an acceptable method in the early diagnosis of PE and also evaluation of prevalence and affecting factors of disease. Key words: Lung perfusion-ventilation scan, pulmonary embolism 121
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